Treat exact domain match cookies on public suffixes as host cookies.

net/cookies/canonical_cookie.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Portions of this code based on Mozilla:
 //   (netwerk/cookie/src/nsCookieService.cpp)
 /* ***** BEGIN LICENSE BLOCK *****
  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
  *
  * The contents of this file are subject to the Mozilla Public License Version
@@ skipping 217 matching lines @@
     return NULL;
   }
 
   if (options.exclude_httponly() && parsed_cookie.IsHttpOnly()) {
     VLOG(kVlogSetCookies) << "Create() is not creating a httponly cookie";
     return NULL;
   }
 
   std::string cookie_domain;
   if (!GetCookieDomain(url, parsed_cookie, &cookie_domain)) {
+    VLOG(kVlogSetCookies) << "Create() failed to get a cookie domain";
     return NULL;
   }
 
   std::string cookie_path = CanonicalCookie::CanonPath(url, parsed_cookie);
   Time server_time(creation_time);
   if (options.has_server_time())
     server_time = options.server_time();
 
   Time cookie_expires = CanonicalCookie::CanonExpiration(parsed_cookie,
                                                          creation_time,
@@ skipping 193 matching lines @@
   if (IsSecure() != other.IsSecure())
     return IsSecure();
 
   if (IsHttpOnly() != other.IsHttpOnly())
     return IsHttpOnly();
 
   return Priority() < other.Priority();
 }
 
 }  // namespace net